{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "883647137",
    "entityType": "User",
    "nonce": "0xa5254aae12e31879142add00ffe590c4e5f5c0631c99249b2e9be4be69d2121e",
    "signature": "0xd2e4a7e4ffb8de3999619ed0812d59c1a35c122aba7cd1363681f50e3fd6d13a71035c2fe33765d8872c6fe1d47c5f649ba8f09261dad157ec8d4978940ad6c01c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}